問題詳情
3.設某沙漠地區某一段時間的溫度函數為f(t)=-t2+10t+11 ，其中1≦ t≦10，則這段時間內該地區的最大溫差為
(A) 9
(B) 16
(C) 20
(D) 25
(E) 36
參考答案
無參考答案
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